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1 2008

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The analysis and assessment of the impact of the lengthening the mileage on the changes of some characteristics of oil engine

Szubartowski M., Sójka M., Bukowski P.

Journal of KONES

2008

Vol. 15, No. 4

557-563

In an exploitation process engine, there are physic-chemical changes of oil, which make impurities oil have a different characteristic. It is mainly connected with the element systems and greasy materials that react between themselves. The changes are constant and they mirror their new exploiting character. Deteriorating characteristics of oil influence its usefulness in a using process. The aim of the thesis is to show the results of exploitation research of engine oil that is used in transportation, basically by the Public Transport Company. The research mainly focuses on engine oil exploited in the buses of a public transport. They are of the following type: MAN NL, MAN NG, JELCZ 181 MG. O They have multi-seasonal oil like TEDEX, DIESEL, TRUCK SHPD SAE:15 W-40. The subject of the research is the processes that occur in engine oil while its exploitation. On the basis of the research, it was possible to specify the nature of the engine oil aging processes as well as the impact of the exploiting conditions on a temporal state of the main parameters that characterize the suitability of the engine oil. It has been proved that there is a lack of suitable and reliable methods of diagnosing and controlling the engine oil state while its exploitation. The following thesis is the first step to make the attempt to lengthen the distance in kilometres travelled of engine oil and determine the limit states of the crucial parameters on the basis of a real index.